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Saturday, 27 August 2016

19-3-2015 SINGAPORE - SUPERB STARLING (JUVENILE) (Lamprotornis superbus)


The superb starling (Lamprotornis superbus) is a member of the starling family of birds. It was formerly known as Spreo superbus. They are long-lived birds that can live over 15 years in captivity.

This species is 18 to 19 cm (7.1 to 7.5 in) in height. These small short-tailed starlings have a long narrow bill, robust bodies, strong feet and a distinctive plumage pattern. Their spectacular iridescent plumage is due to the arrangement of melanin granules within the feathers, resulting in structural blues and greens, rather than colors derived from pigments. The appearance of the superb starling is very similar to the Hildebrandt's starling, also found in East Africa. The superb starling is distinguished by having pale creamy-white eyes, as opposed to red eyes in the Hildebrandt's. Moreover, only adult superb starlings have a white breast band. 


Juveniles have duller plumage. There are distinct plumage regions, but there is no glossy sheen except on the tail and wing feathers. The iris appears brown at first, later grayish white. The bill has a pale yellowish color with darkening on the tip. The legs are brown. By seven months, the bird acquires adult plumage, although the eyes remain dark, and there is yellow coloring at the base of the bill. 


The superb starling lives in the savanna, thornbush and acacia arid areas, open woodland, lakeshore woodlands, gardens and cultivated fields, at an elevation of 0–2,650 metres (0–8,694 ft) above sea level. They tend to avoid humid lowland areas. This species has a very large range and can commonly be found in East Africa, including Ethiopia, Somalia, Uganda, Kenya, South Sudan, and Tanzania. Superb Starlings typically occupy large territories, often exceeding 50 hectares (0.50 km2). When they are not on their territories, they are usually searching for food or heading to water sources. Their group can have more than 40 individuals. The sex ratio in those is approximately equal. In the non-breeding season, being the dry season, the groups of superb starlings live with other starling species such as the Hildebrandt’s starling (Lamprotornis hildebrandti) and the greater blue-eared glossy starling (Lamprotornis chalybaeus). They have also been observed with other bird species such as the red-billed buffalo weaver (Bubalornis niger) and the white-headed buffalo weaver (Dinemellia dinemellii) in the Serengeti National Park, in Tanzania. Mixed species flocks might aid in obtaining food and serve as a defense mechanism against predators. When it is the breeding season however, the superb starlings are territorial and chase the birds of other species from the group, especially when they approach their nests.

19-3-2015 JURONG, SINGAPORE - SILVER PHEASANT (Lophura nycthemera)


The silver pheasant (Lophura nycthemera) is a species of pheasant found in forests, mainly in mountains, of mainland Southeast Asia and eastern and southern China, with an introduced population on Victoria Island in Nahuel Huapi Lake, Neuquén, Argentina. The male is black and white, while the female is mainly brown. Both sexes have a bare red face and red legs (the latter separating it from the greyish-legged kalij pheasant). It is common in aviculture, and overall also remains common in the wild, but some of its subspecies (notably L. n. whiteheadi from Hainan, L. n. engelbachi from southern Laos, and L. n. annamensis from southern Vietnam) are rare and threatened.


This is a relatively large pheasant, with males of the largest subspecies having a total length of 120 to 125 cm (47 to 49 in), including a tail up to 75 cm (30 in), while the males of the smallest subspecies barely reach 70 cm (28 in) in total length, including a tail around 30 cm (12 in). The body mass of males can range from 1.13–2.00 kg (2.49–4.41 lb). smaller than their respective males, with a size range of 55–90 cm (22–35 in) in total length, including a tail of 24–32 cm (9.4–12.6 in). The body mass of females can range from 1.0–1.3 kg (2.2–2.9 lb).

Males of the northern subspecies, which are the largest, have white upperparts and tail (most feathers with some black markings), while their underparts and crest are glossy bluish-black. The males of the southern subspecies have greyer upperparts and tail with extensive black markings, making them appear far darker than the northern subspecies. The adult male plumage is reached in the second year.

Females are brown and shorter-tailed than males. Females of some subspecies have whitish underparts strongly patterned with black, and in L. n. whiteheadi this extends to the upper mantle.

19-3-2015 JURONG, SINGAPORE - ASIAN FAIRY BLUEBIRD (Irena puella)


The Asian fairy-bluebird (Irena puella) is a medium-sized, arboreal passerine bird. This fairy-bluebird is found in forests across tropical southern Asia, Indochina and the Greater Sundas. Two or three eggs are laid in a small cup nest in a tree. It was described by British ornithologist John Latham in 1790. The only other member of the genus and family is the Philippine fairy-bluebird, I. cyanogastra, which replaces the Asian fairy-bluebird in most of the Philippines. Both species are considered as sacred to the Tagalog people as they are perceived as tigmamanukan omens.

The adult Asian fairy bluebird is about 24 to 27 centimetres (9.4 to 10.6 in). The male has glossy, iridescent blue upperparts, and black underparts and flight feathers. The female and first year male are entirely dull blue-green.

The Asian fairy bluebird eats fruits, nectar and some insects. Its call is a liquid two note glue-it.

19-3-2015 SINGAPORE - WESTERN CROWNED PIGEON (Goura cristata)


The western crowned pigeon (Goura cristata), also known as the common crowned pigeon or blue crowned pigeon, is a large, blue-grey pigeon with blue lacy crests over the head and dark blue mask feathers around its eyes. Both sexes are almost similar but males are often larger than females. It is on average 70 cm (28 in) long and weighs 2.1 kg (4.6 lbs).
Along with its close and very similar-looking relatives the Victoria crowned pigeon, Sclater's crowned pigeon, and Scheepmaker's crowned pigeon, it is one of the largest members of the pigeon family. The western crowned pigeon is found in and is endemic to the lowland rainforests of northwestern New Guinea; the other species of crowned pigeon inhabit different regions of the island. The diet consists mainly of fruits and seeds.

Hunted for food and its plumes, it remains common only in remote areas. Due to ongoing habitat loss, limited range and overhunting in some areas, the western crowned pigeon is evaluated as Vulnerable on the IUCN Red List of Threatened Species. It is listed in Appendix II of CITES.


The western crowned pigeon was first described by the German naturalist Peter Simon Pallas in 1764 and given the binomial name Columba cristata. A molecular phylogenetic study published in 2018 found that the western crowned pigeon was most closely related to Sclater's crowned pigeon (Goura sclaterii).


Western crowned pigeons are one of the largest species of pigeon. They are also called blue crowned pigeons.


The Common or Western Crowned Pigeon is one of four species of Crowned Pigeons. It is not very "common" and is native to lowland forests of Irian Jaya/West Papua, Indonesia.

It does not have feathered tips to its crest like the Victoria, it has no black chinstrap and does not have a maroon chest or under-parts, only a top mantle.

Hunting for its lacy plumes, for meat and for captive trade in addition to habitat destruction have made it vulnerable.


Pigeons have an unusual way of drinking. Most birds scoop water and tilt their heads back to drink, but pigeons can suck water into their bill.
They spend most of their time on the ground and rarely fly. They are believed to be the closest living relative to the now extinct dodo. Dodos were a large, flightless species of pigeon that was hunted to extinction.
These birds, like other pigeons, produce a semi-solid substance known as “crop milk” to feed their chicks. It is secreted from their crop which is a pouch near their throat. Both males and females produce crop milk.


19-3-2016 JURONG, SINGAPORE - EURASIAN HOOPOE (Upupa epops)


The Eurasian hoopoe (Upupa epops ) is the most widespread species of the genus Upupa. It is a distinctive cinnamon coloured bird with black and white wings, a tall erectile crest, a broad white band across a black tail, and a long narrow downcurved bill. Its call is a soft "oop-oop-oop". It is native to Europe, Asia and the northern half of Africa. It is migratory in the northern part of its range. It spends most of the time on the ground probing for grubs and insects. The clutch of seven to eight eggs is laid in an existing cavity. The eggs are incubated by the female and hatch asynchronously. Some ornithologists treat the African and Madagascar hoopoes as subspecies of the Eurasian hoopoe.


The Eurasian hoopoe (Upupa epops ) is the most widespread species of the genus Upupa. It is a distinctive cinnamon coloured bird with black and white wings, a tall erectile crest, a broad white band across a black tail, and a long narrow downcurved bill. Its call is a soft "oop-oop-oop". It is native to Europe, Asia and the northern half of Africa. It is migratory in the northern part of its range. It spends most of the time on the ground probing for grubs and insects. The clutch of seven to eight eggs is laid in an existing cavity. The eggs are incubated by the female and hatch asynchronously. Some ornithologists treat the African and Madagascar hoopoes as subspecies of the Eurasian hoopoe.

The Eurasian hoopoe is a cinnamon-colored bird with black and white wings, a tall erectile crest, a broad white band across a black tail, and a long narrow downcurved bill. The bird has broad and rounded wings capable of strong flight which are larger in the northern migratory subspecies. The hoopoe has a characteristic undulating flight, which is like that of a giant butterfly, caused by the wings half-closing at the end of each beat or a short sequence of beats.

Eurasian hoopoes have a carnivorous (insectivorous) diet. They eat mostly insects, although small reptiles, frogs, and plant matter such as seeds and berries are sometimes taken as well.


Eurasian hoopoes are widespread in Europe, Asia, and North Africa, and northern Sub-Saharan Africa. Most European and north Asian birds migrate to the tropics in winter. Those breeding in Europe usually migrate to the Sahel belt of sub-Saharan Africa. The African populations are sedentary all year. Eurasian hoopoes require bare or lightly vegetated ground on which to forage and vertical surfaces with cavities (such as trees, cliffs, or even walls, nestboxes, haystacks, and abandoned burrows) in which to nest. These requirements can be provided in habitats such as heathland, wooded steppes, savannas and grasslands, as well as forest glades.

Eurasian hoopoes are active during the day spending most of the time on the ground probing for grubs and insects. They are solitary foragers who typically feed on the ground. More rarely they will feed in the air, where their strong and rounded wings make them fast and maneuverable, in pursuit of numerous swarming insects. More commonly their foraging style is to stride over relatively open ground and periodically pause to probe the ground with the full length of their bill. The rest of the time is typically spent sunbathing by spreading out their wings and tails low against the ground and tilting their head up; they often fold their wings and preen halfway through. They also enjoy taking dust and sand baths. The typical call of these birds is a trisyllabic ‘oop-oop-oop’. Other calls include rasping croaks, when alarmed, and hisses. Females produce a wheezy note during courtship feeding by the male.

Eurasian hoopoes are serially monogamous, meaning they form pair bonds that last for a single breeding season. They are solitary and territorial breeders. The male calls frequently to advertise his ownership of the territory. Chases and fights between rival males (and sometimes females) are common and can be brutal. Birds will try to stab rivals with their bills, and individuals may be occasionally blinded in fights. The nest of Eurasian hoopoes is usually located in a hole in a tree or wall. It has a narrow entrance and may be unlined, or various scraps may be collected. The female alone is responsible for incubating the eggs. Clutch size varies with location and can contain from 4 to 12 eggs. The incubation period lasts between 15 and 18 days, during which time the male feeds the female. The chicks hatch with a covering of downy feathers. By around day 3 to 5, feather quills emerge which will become the adult feathers. The chicks are brooded by the female for between 9 and 14 days. The female later joins the male in the task of bringing food. The young fledge in 26 to 29 days and remain with the parents for about a week more.

19-3-2015 SINGAPORE - MASKED LAPWING (Vanellus miles)


The masked lapwing (Vanellus miles) is a large, common and conspicuous bird native to Australia, particularly the northern and eastern parts of the continent, New Zealand and New Guinea. It spends most of its time on the ground searching for food such as insects and worms, and has several distinctive calls. It is common in Australian fields and open land, and is known for its defensive swooping behaviour during the nesting season.

Despite the species being also known as the masked plover and often called the spur-winged plover or just plover in its native range, lapwings are classified to their own subfamily, Vanellinae, and not to the closely related plover subfamily, Charadriinae. There are two subspecies: the nominate subspecies and the southern novaehollandiae. The latter has distinctive black markings on the shoulder and side of the chest, and is sometimes recognized as a separate species: the black-shouldered lapwing (Vanellus novaehollandiae).


The masked lapwing was described by the French polymath Georges-Louis Leclerc, Comte de Buffon, in his Histoire Naturelle des Oiseaux in 1781. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the Planches Enluminées D'Histoire Naturelle. This was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name Tringa miles in his catalogue of the Planches Enluminées. The type locality was originally given in error as Louisiana. The locality was re-designated by the Australian ornithologist Gregory Mathews in 1912 as Timor Laut (the Tanimbar Islands). The current genus Vanellus was erected by the French zoologist Mathurin Jacques Brisson in 1760. Vanellus is the Modern Latin for a "lapwing". It is a diminutive of the Latin vanus meaning "winnowing" or "fan". The specific epithet miles is the Latin word for "soldier".


The masked lapwing is the largest representative of the family Charadriidae. It measures from 30 to 37 cm (12 to 15 in) in length and has a wingspan of 75–85 cm (30–33 in), and has a conspicuous yellow spur on the carpal joint of each wing. The nominate subspecies (V. m. miles) weighs 191–300 g (6.7–10.6 oz), while the southern race (V. m. novaehollandiae) is larger and weighs 296–412 g (10.4–14.5 oz). The subspecies from northern Australia and New Guinea (V. m. miles) has an all-white neck and large yellow wattles with the male having a distinctive mask and larger wattles. The subspecies found in the southern and eastern states of Australia and in New Zealand (V. m. novaehollandiae), and often locally called the spur-winged plover, has a black neck-stripe and smaller wattles. (Note that the northern-hemisphere spur-winged plover is a different bird.)

The birds have a wide range of calls which can be heard at any time of the day or night: the warning call, a loud defending call, courtship calls, calls to its young, and others. Since the bird lives on the ground, it is always alert and, even though it rests, it never sleeps properly.


Masked lapwings are most common around the edges of wetlands and in other moist, open environments, but are adaptable and can often be found in surprisingly arid areas. They can also be found on beaches and coastlines. Vanellus miles novaehollandiae spread naturally to Southland, New Zealand in the 1930s and has now spread throughout New Zealand, where it is recognised as a self-introduced native and known as the spur-winged plover.


Masked lapwings are shy and harmless in summer and autumn but are best known for their bold nesting habits, being quite prepared to make a nest on almost any stretch of open ground, including suburban parks and gardens, school ovals, and even supermarket carparks and flat rooftops. They can be particularly dangerous at airports where their reluctance to move from their nesting area, even for large aircraft, has resulted in several bird strikes.[15] Breeding usually happens after winter solstice (June 21), but sometimes before. The nesting pair defends their territory against all intruders by calling loudly, spreading their wings, and then swooping fast and low, striking at interlopers, if necessary, with their feet, and attacking animals on the ground with the conspicuous yellow spur on the carpal joint of the wing.

The bird may also use diversion tactics against potential predators, such as fiercely protecting a non-existent nest, or a distraction display of hopping on a single leg, to attract attention to itself and away from its real nest, or from its chicks after they have commenced foraging. There seems to be some significant use of language to guide chicks during a situation perceived to be dangerous. Long calls appear to tell the chicks to come closer to the calling bird, and a single chirp every few seconds instructs them to move away.


There is a widely-believed myth that the spur can inject venom. That may have been based on fear of the masked lapwing's territorial behaviour. Attacks are most vicious on other birds, such as ravens, and also on cats and dogs, but once the chicks reach 60% of full size after two or three months, the chances of that happening decrease. Strikes are much rarer on humans because they are more aware. Sometimes the bird can damage its wing in a strike but usually survives, although it is flightless while the wing heals. Some masked lapwings, especially those living in residential suburban areas, may never successfully breed, due to increased disturbance from domestic pets, people on footpaths, and cars. Commonly, two birds are seen together, a male and a female which are almost identical. They can be seen in groups at times, especially while feeding on coastlines. The chick reaches full growth after four or five months and will often stay with the parents for from one to two years, resulting in family groups of three to five birds nesting in one location over the summer. Their lifespan is approximately 16 years.

The birds spend much of the time on the ground, searching for worms and insects to feed on.

19-3-2016 SINGAPORE - WHITE-HEADED MUNIA (Lonchura maja)


The white-headed munia (Lonchura maja) is a species of estrildid finch found in Teladan, Malaysia, Singapore, Thailand and Vietnam. This species is also introduced to Portugal. It is found in wetlands habitat. The status of the species is evaluated as Least Concern.
Smallish (11 cm), white headed brown finch. Similar to the chestnut munia but paler brown and entire head and throat white. Young birds are brown on upperparts with underparts and face buff. Iris-brown; bill-grey; feet-pale blue. Voice: high-pitched 'pee-pee'.


Malay peninsula, Sumatra, Java, Bali and Celebes. In Java and Bali this is a fairly common and widespread bird up to 1500 m.

It frequents marshes and reedbeds. Like other munias form large flocks during rice harvest but spread out in pairs during breeding season. General behaviour similar to other munias.

Thursday, 25 August 2016

25-8-2016 VILLALONGA RESERVOIR, VALENCIA - SQUACCO HERON (Ardeola ralloides)


The squacco heron (Ardeola ralloides ) is a small heron, 44–47 cm (17+1⁄2–18+1⁄2 in) long, of which the body is 20–23 cm (8–9 in), with 80–92 cm (31+1⁄2–36 in) wingspan. It is of Old World origins, breeding in southern Europe and the Greater Middle East.

The squacco heron is a migrant, wintering in Africa. It is rare north of its breeding range. The species has been recorded in Fernando de Noronha islands, and more rarely in mainland South America, as a vagrant. This is a stocky species with a short neck, short thick bill and buff-brown back. In summer, adults have long neck feathers. Its appearance is transformed in flight, when it looks very white due to the colour of the wings.

The squacco heron's breeding habitat is marshy wetlands in warm countries. The birds nest in small colonies, often with other wading birds, usually on platforms of sticks in trees or shrubs. Three to four eggs are laid. They feed on fish, frogs and insects.

25-8-2016 VILLALONGA RESERVOIR, VALENCIA - EUROPEAN MOORHEN (JUVENILE) (Gallinula chloropus)


The common moorhen (Gallinula chloropus), also known as the waterhen or swamp chicken, is a bird species in the rail family (Rallidae). It is distributed across many parts of the Old World.

The common moorhen lives around well-vegetated marshes, ponds, canals and other wetlands. The species is not found in the polar regions or many tropical rainforests. Elsewhere it is likely the most common rail species, except for the Eurasian coot in some regions.


The closely related common gallinule of the New World has been recognized as a separate species by most authorities, starting with the American Ornithologists' Union and the International Ornithological Committee in 2011.

The moorhen is a distinctive species, with predominantly black and brown plumage, with the exception of a white under-tail, white streaks on the flanks, yellow legs and a red frontal shield. The bill is red with a yellow tip. The young are browner and lack the red shield. The frontal shield of the adult has a rounded top and fairly parallel sides; the tailward margin of the red unfeathered area is a smooth waving line. In the related common gallinule (Gallinula galeata) of the Americas, the frontal shield has a fairly straight top and is less wide towards the bill, giving a marked indentation to the back margin of the red area.

The common moorhen gives a wide range of gargling calls and will emit loud hisses when threatened. A midsized to large rail, it can range from 30 to 38 cm (12 to 15 in) in length and span 50 to 62 cm (20 to 24 in) across the wings. The body mass of this species can range from 192 to 500 g (6.8 to 17.6 oz).

25-8-2016 VILLALONGA RESERVOIR, VALENCIA - LITTLE EGRET (Egretta garzetta)


It is a stylized medium-sized white heron, its bill is dark, as are its legs, and it has yellow feet. Its nuptial plumage includes two characteristically long feathers.

Present throughout the year, it is strongly influenced by the existence of nearby breeding colonies, noting a progressive increase in the summer population that reaches its peak in the postnuptial migratory passage, after which the population begins to decline.

As it is white it is easily seen and observed. It is not difficult to find it in the port / marina in Roquetas de Mar and even in the ‘Laja’.

Differs from other white herons in the region by dark legs with contrasting yellow feet and toes. Bill always dark, and lores grey or reddish (breeding birds). Slender and elegant build, as opposed to Cattle Egret. Only roughly half the size of Great White Egret. In flight, note much quicker wing-beats of Little Egret and that the wings of Great White seems to be positioned more at the front of the body. Skulking, foraging behaviour with less erect posture than Great White, also when moving about. Legs less protruding beyond tail in flight than in GWE.

25-8-2016 VILLALONGA RESERVOIR, VALENCIA - COPPER DEMOISELLE DAMSELFLY (MALE) (Calopteryx haemorrhoidalis)


Calopteryx haemorrhoidalis is a species of damselfly in the family Calopterygidae known by the common names copper demoiselle and Mediterranean demoiselle.

Subspecies include:

Calopteryx haemorrhoidalis haemorrhoidalis (Vander Linden, 1825)
Calopteryx haemorrhoidalis occasi Capra, 1945
Calopteryx haemorrhoidalis asturica Ocharan, 1983
Calopteryx haemorrhoidalis almogravensis Hartung, 1996
Distribution

This species is native to the western Mediterranean Basin in Europe (Iberia, southern France, Italy, Monaco) and North Africa (Algeria, Morocco, Tunisia). It is common in much of its range.

It lives along rivers and streams, but also in sunny larger waters. Though it may be affected by habitat changes such as water pollution.


Calopteryx haemorrhoidalis can reach a body length of about 45–48 millimetres (1.8–1.9 in). The abdomen length is of about 34–43 millimetres (1.3–1.7 in) in males, of 31–43 millimetres (1.2–1.7 in) in females. The length of the wings is of 23–32 millimetres (0.91–1.26 in) in males, of 25–37 millimetres (0.98–1.46 in) in the females.

The males have a dark, metallic shining body, the color of which can be red-violet, golden or copper-colored. On the underside of the last three abdominal segments there red area, the so-called "red lantern" (hence the Latin species name haemorrhoidalis, meaning "blood flow"). The wings of males show a large dark area, while the females have a brown band to the wing tip and a metallic-green to bronze-colored body, with a brown belt on the back.

The flight time of this species ranges from May to September. The males have a characteristic mating dance, showing the abdomen end and spreading their wings wide. The male of this species is territorial, defending sites where females may choose to lay eggs.
This species can hybridize with Calopteryx splendens.

24-8-2016 ATOCHA ESTACION, MADRID - YELLOW BELLIED SLIDER (Trachemys scripta ssp. scripta)



The yellow-bellied slider (Trachemys scripta scripta ) is a land and water turtle belonging to the family Emydidae. This subspecies of pond slider is native to the southeastern United States, specifically from Florida to southeastern Virginia, and is the most common turtle species in its range. It is found in a wide variety of habitats, including slow-moving rivers, floodplain swamps, marshes, seasonal wetlands, and permanent ponds. Yellow-bellied sliders are popular as pets.
Adult male yellow-bellied sliders typically reach 5–9 inches (13–23 cm) in length; females range from 8–13 inches (20–33 cm). The carapace (upper shell) is typically brown and black, often with yellow stripes. The skin is olive green with prominent patches of yellow down the neck and legs. As the name implies, the plastron (bottom shell) is mostly yellow with black spots along the edges. Adults tend to grow darker as they age. Yellow-bellied sliders are often confused with eastern river cooters, who also have yellow stripes on the neck and yellow undersides, but the latter lack the green spots characteristic of this species. The yellow belly often has an "s"-shaped yellow stripe on its face. They also have markings shaped like question marks on their bellies. Females of the species reach a larger body size than the males do in the same populations.

Mating can occur in spring, summer, and autumn. They have polygynandrous mating behavior. Courtship consists of biting, foreclaw display, and chasing. Yellow-bellied sliders are capable of interbreeding with other T. scripta subspecies, such as red-eared sliders, which are commonly sold as pets. The release of non-native red-eared sliders into local environments caused the state of Florida to ban the sale of red-eared sliders in order to protect the native population of yellow-bellied sliders.


Yellow-bellied slider movement is highly instigated by dry seasons, where they can be found traveling terrestrially to locate a new water source. One study also found movement is also highly motivated by reproductive recruitment. Differences between male and female movements were observed. Males were more active than females in spring to the end of autumn. Males also exhibited more terrestrial and aquatic movements than females. Finally, long periods of movements were exclusively males.

Mating takes place in the water. Suitable terrestrial area is required for egg-laying by nesting females, who will normally lay 6–10 eggs at a time, with larger females capable of bearing more. The eggs incubate for 2–3 months and the hatchlings will usually stay with the nest through winter. Hatchlings are almost entirely carnivorous, feeding on insects, spiders, crustaceans, tadpoles, fish, and carrion. As they age, adults eat less and less meat, and up to 95% of their nutritional intake eventually comes from plants.

The slider is considered a diurnal turtle; it feeds mainly in the morning and frequently basks on shore, on logs, or while floating, during the rest of the day. At night, it sleeps on the bottom or on the surface near brush piles. Highest densities of sliders occur where algae blooms and aquatic macrophytes are abundant and are of the type that form dense mats at the surface, such as Myriophyllum spicatum and lily pads (Nymphaeaceae). Dense surface vegetation provides cover from predators and supports high densities of aquatic invertebrates and small vertebrates, which offer better foraging than open water.

Some common predators of the yellow-bellied slider include raccoons, opossums, red foxes, and skunks. Other than predators, yellow-bellied sliders are susceptible to respiratory infections which can cause wheezing, drooling, or puffiness in the eyes and is commonly caused by bacteria. Additionally, these turtles can develop fungal spores that can lead to shell rot, they can also develop metabolic bone disease which can stunt the growth of their shells and cause them to be more brittle and prone to damage

The lifespan of yellow-bellied sliders is over 30 years in the wild, and over 40 years in captivity.

Since yellow-bellied sliders are long-lived organisms, they require high survivorship to maintain stable populations. They are particularly susceptible to negative effects associated with anthropogenic habitat modification such as increased presence of human-subsidized predators and increased road mortality. Recruitment could also be decreased in populations in highly urbanized areas due to a decrease in habitat connectivity and potential nesting sites.

24-8-2016 ATOCHA ESTACION, MADRID - OUACHITA MAP TURTLE (Graptemys ouachitensis)


The Ouachita map turtle (Graptemys ouachitensis) is a species of turtle belonging to the family Emydidae.

This species is endemic to the United States. It can be found in Texas, Louisiana, Mississippi, Alabama, Oklahoma, Kansas, Arkansas, Missouri, Iowa, Minnesota, Wisconsin, Indiana, Ohio, West Virginia, Illinois, Tennessee and Kentucky. G. o. sabinensis exists only in the Sabine River of Louisiana and Texas. Both G. o. ouachitensis and G. o. sabinensis are freshwater riverine turtles. The G. o. ouachitensis is rarely seen on land unless it is nesting season or it is basking. 


This species' carapace features a row of low vertebral spines, and is serrated on the posterior rim. The carapace is olive, dark brown, or black in coloration with light yellowish markings with dark borders. The plastron color varies from cream to yellow and is patterned with dark lines and swirls. The body color is grayish brown to blackish and is marked with yellowish stripes.

On the head, it has light yellow spots: a rectangular one behind each eye, an oval under each eye, and a round one on each side of the jaw. In some specimens, the spot behind and the spot under the eye can combine to form a single thick "C" stain. The eye has a black stripe in the middle.

Males are significantly smaller than females. The males can grow to be as large as 5 in (12 cm) in carapace length. The females can grow to be up to 10 in (25 cm) in carapace length.

24-8-2016 ATOCHA ESTACION, MADRID - FALSE MAP TURTLE (Graptemys pseudogeographica)


The False map turtle (Graptemys pseudogeographica) is a species of freshwater turtle that is found in the United States. It is occasionally called "sawback", in reference to the serrated keels on its shell.

Population size
Unknown
Life Span
30-50 years
Weight
1-1.8
kglbs
kg lbs 
Length
9-27
cminch


The False map turtle has a carapace featuring a vertebral row of low spines and is serrated on the posterior rim. The carapace is olive to brown in color with light yellowish markings with dark borders. The plastron color varies from cream to yellow and is patterned with dark lines along the seams in juveniles. The body color of the false map turtle is grayish-brown to blackish and is marked with light brown, yellow, or whitish stripes. The eye can be brown, light yellow, white, or green and is crossed with a dark bar. Narrow hooked marks behind the eye fuse with dorsal lines on the head and neck. Also, small light-colored spots occur below the eye and on the chin.


False map turtles live in large streams of the Missouri and Mississippi River systems, ranging from Ohio, Indiana, Illinois, Wisconsin, and Minnesota, through the Dakotas southward to southwestern Alabama, southern and western Mississippi, and Louisiana. They also occur in several other river systems of Southwest Louisiana and East Texas. False map turtles prefer rivers and large creeks with moderate currents, containing aquatic vegetation, as well as snags or floating logs. They are also comfortable in deep and swift water. They occur in oxbow lakes and sloughs but are absent from lakes, ponds, or small streams.

False map turtles are diurnal reptiles. They are avid baskers, spending many hours during the day in the sun. Basking is important to these turtles, and they may even be found on steep, slippery snags. When with other turtles, they also are very communal, sharing space and using each other for predator-watching, increasing the odds of surviving an attack. False map turtles are active from late March/April to mid-October.

24-8-2016 ATOCHA ESTACION, MADRID - RED EARED SLIDER TERRAPIN (Trachemys scripta ssp. elegans)


The red-eared slider or red-eared terrapin (Trachemys scripta elegans) is a subspecies of the pond slider (Trachemys scripta), a semiaquatic turtle belonging to the family Emydidae. It is the most popular pet turtle in the United States, is also popular as a pet across the rest of the world, and is the most invasive turtle. It is the most commonly traded turtle in the world.

The red-eared slider is native from the Midwestern United States to northern Mexico, but has become established in other places because of pet releases, and has become invasive in many areas where it outcompetes native species. The red-eared slider is included in the list of the world's 100 most invasive species.


Invasive red-eared sliders cause negative impacts in the ecosystems they are introduced to because they have certain advantages over the native populations, such as a lower age at maturity, higher fecundity rates, and larger body size, which gives them a competitive advantage at basking and nesting sites, as well as when exploiting food resources. They also transmit diseases and displace the other turtle species with which they compete for food and breeding space.


Owing to their popularity as pets, red-eared sliders have been released or escaped into the wild in many parts of the world. This turtle is considered one of the world's worst invasive species. Feral populations are now found in Bermuda, Canada, Australia, Europe, Great Britain, South Africa, the Caribbean Islands, Israel, Bahrain, the Mariana Islands, Guam, Russia, and south- and far-east Asia. Within Great Britain, red-eared sliders have a wide distribution throughout England, Scotland, and Wales.

In Australia, it is illegal for members of the public to import, keep, trade, or release red-eared sliders, as they are regarded as an invasive species – see below. Their import has also been banned by the European Union as well as specific EU member countries. In 2015, Japan announced it was planning to ban the import of red-eared sliders, but it would probably not take effect until 2020.


Red-eared sliders do not hibernate, but actually brumate; while they become less active, they do occasionally rise to the surface for food or air. Brumation can occur to varying degrees. In the wild, red-eared sliders brumate over the winter at the bottoms of ponds or shallow lakes. They generally become inactive in October, when temperatures fall below 10 °C (50 °F). During this time, the turtles enter a state of sopor, during which they do not eat or defecate, they remain nearly motionless, and the frequency of their breathing falls. Individuals usually brumate under water, but they have also been found under banks and rocks, and in hollow stumps. In warmer winter climates, they can become active and come to the surface for basking. When the temperature begins to drop again, however, they quickly return to a brumation state. Sliders generally come up for food in early March to as late as the end of April.